Camera apparatus for taking stereographic photographs

ABSTRACT

A camera mechanism for taking stereographic photographs, embodying a first mechanism for moving a lenticular screen, a second mechanism operatively interconnected with the first mechanism, and operable to control the shutter at prescribed time intervals to make exposures correlated to the movement of the light-restricting screen, and a third mechanism controlling the travel of the camera at predetermined increments of travel relative to the subject being photographed. The camera mechanism further embodies electrical programming circuitry for electrically interconnecting the first, second and third mechanisms to correlate a predetermined amount of camera travel with a predetermined movement of the lenticular screen and the corresponding timely actuation of the shutter.

United States Patent Matsunaga et al.

[15] 3,685,413 [451 Aug. 22, 1972 CAMERA APPARATUS FOR TAKINGSTEREOGRAPHIC PHOTOGRAPHS [72] Inventors: Kenii Matsunaga; MichioHoriuchi;

Takao Suzuki, all of Tokyo, Japan [73] Assignee: Dai Nippon lnsatuKabushiki Kaisha, Tokyo, Japan [22] Filed: Oct. 24, 1969 [21] Appl. No.:869,270

[52] US. Cl ..95/18 P [51 Int. Cl. ..G03b 35/08 [58] Field of Search..95/18 P, 36 R [56] References Cited UNITED STATES PATENTS 1,950,3743/1934 Kanolt ..95/18 P 1,977,310 10/1934 Kanolt ..95/18 2,485,81110/1949 Bonnet ..95/18 2,622,472 12/1952 Bonnet ..95/18 X PrimaryExaminer-Samuel S. Matthews Assistant Examiner-Fred L. BraunAtl0rneyWencleroth, Lind & Ponack 5 7 ABSTRACT A camera mechanism fortaking stereographic photographs, embodying a first mechanism for movinga lenticular screen, a second mechanism operatively interconnected withthe first mechanism, and operable to control the shutter at prescribedtime intervals to make exposures correlated to the movement of thelight-restricting screen, and a third mechanism controlling the travelof the camera at predetermined increments of travel relative to thesubject being photographed. The camera mechanism further embodieselectrical programming circuitry for electrically interconnecting thefirst, second and thirdmechanisms to correlate a predetermined amount ofcamera travel with a predetermined movement of the lenticular screen andthe corresponding timely actuation of the shutter.

PATENTEDA B m2 11685541 3 SHEEI 1 BF 2 FIG. I

PRIOR ART FIG 2 Q2 PRIOR ART FIG. la W Q KENJI MATSUNAGA,

MICHIO HORIUCHI and TAKAO SUZUKI,

3% INVENTORs ATTORNEYS PATENTEmusez I972 SHEEF 2 BF 2 FIG. 4

FIG. 6

KENJI MATSUNAGA, MICHIO HORIUCHI and TAKAO SUZUKI ATTORNEY S :INVENTORSCAMERA APPARATUS FOR TAKING STEREOGRAPHIC PHOTOGRAPHS This inventionrelates to a camera provided with a first mechanism for moving alenticular screen or a slit and a second mechanism for opening andclosing a shutter in order to take a photograph of more interest in theform of a stereograph. Further, the camera of this invention is providedwith a third mechanism for controlling the travel of the camera, withall three mechanisms being interrelated.

The invention will be better understood when considered in conjunctionwith the illustrative drawings, wherein:

FIG. 1 is a schematic plan view of a prior art relationship of a cameramovable along a fixed path relative to subject being photographed;

FIG. la is a fragmentary diagrammatic end view of a lenticular screenmovably superposed upon a photographic film or photo-sensitive surface;

FIG. 2 is a view similar to FIG. 1, but on an enlarged scale;

FIG. 3 is a schematic elevational view of the first and secondmechanisms of one form of the improved invention in which a shiftableframe-supported lenticular screen has the shifting mechanism thereforinterconnected to the shutter mechanism;

FIG. 4 is a view similar to FIG. 3, but depicting a modified embodiment;

FIG. 5 is a fragmentary enlarged detail of the modified means of FIG. 4for actuating both the screen shiftable movements and the shutter; and

FIG. 6 is a schematic view on a smaller scale showing the components ofFIG. 5 as viewed generally transversely to FIG. 5.

FIG. 7 is a fragmentary enlarged detail of the disc of FIG. 5.

One of the conventional techniques for photographing a point of interestin the form of a stereograph by using a single camera and a lenticularscreen is illustrated by referring to the accompanying FIG. 1. Accordingto the prior art form shown in FIG. 1, a camera 1 is placed on a restwheel or carriage 4 which can be moved on a rail 5. The camera 1 canlook fixedly at the center 3 of a subject or a point of interest 2placed at a desired distance from said camera during a period of time ofits movement on the rail 5. As shown in FIG. 1a, a lenticular screen 7disposed adjacent the surface of a film 6 is moved in the same directionas the movement of the camera 1, and is adapted to move relative to thefilm a distance equal to the spacing for one pitch during a period oftime of opening the shutter. Namely, the time required for this movementis controlled so as to be equal to the time required for opening theshutter. It is necessary for the lenticular screen to be moved therequisite distance with high accuracy during a period of time of openingthe shutter, otherwise if error occurs it causes the degradation of thestereograph. In practice, the conventional lenticular screen has pitchdistances of from 0.2 to 0.5, millimeter, and an allowable error in themoving distance of the lenticular screen or the slit is t 0.01millimeter or less. In the case of the conventional cameras using theprinciple as illustrated by referring to FIG. 1, the opening and closingof the shutter are conducted independently of the traveling of thelenticular screen, and such cameras have the disadvantage of causingerror in the moving distance of the lenticular screen during a period oftime of opening the shutter. Also the known conventional cameras forphotographing subjects of interest in the form of a stereograph arelarge-sized and heavy, and it is difficult to use them for photographingoutdoor points of interest. Thus it has been desired to develop asmall-size and light weight camera having high accuracy in the movingdistance and the moving speed of the lenticular screen for photographingstereographically.

Also, it is necessary to keep the moving speed of the lenticular screenconstant relative to the moving speed of the camera during a period oftime of photographing a stereograph. For this purpose, it is necessaryto eliminate the backlash of the photographing apparatus after it wasstarted and also the carriage 4 must be moved on the rail 5 for anadditional distance to be moved for obtaining a certain constant speedof the carriage. A relationship between the moving speed of thelenticular screen and the additional distance required for moving thecarriage 4 on which a camera is placed, is illustrated hereinafter byreferring to the accompanying FIG. 2.

In FIG..2, the camera I placed on the carriage 4 is positioned at thepoint C facing toward to the front of the center 3 of the point ofinterest 2, and a focus adjustment is made of said camera. If it isassumed that the camera 1 is moved for the distance a during a period oftime of opening the shutter, it is desired that the shutter opens at thepoint A. and closes at the point B for setting the relationship asindicated by the equation of AZ E 11/2. Thus, the lenticular screen andthe camera must be moved for a desirable additional distance dependingon the shutter speed and the moving distance of the camera. In FIG. 2,if it is assumed that the point D is the position for starting thecamera on the rail, the distance as indicated by m is the additionaldistance required for moving the lenticular screen and the camera. Inother words, when the camera is started from the point D and reaches thepoint A, the shutter is opened and the carriage and the lenticularscreen achieve a certain constant speed during the traveling of thecamera for the additional distance as indicated by the distance 5A.

An object of this invention is to provide a camera comprising a firstmechanism for moving a lenticular screen and a second mechanism foropening and closing a shutter in order to take a stereograph of thesubject of interest.

A further object of this invention is to provide a camera comprising afirst mechanism for shiftably moving a lenticular screen, a secondmechanism for opening and closing a shutter and a third mechanism forcontrolling the movement of the camera in order to take a stereograph ofinterest, and with all three mechanisms cooperatively interrelated.

An embodiment of this invention is illustrated by referring to theaccompanying FIG. 3 showing a synchronous operation in the moving of thelenticular screen, and the opening and closing of the shutter.

In FIG. 3, the numeral 8 is a frame disposed behind a camera and theframe is provided with a lenticular screen 9. The lenticular screen 9 ismounted in any conventional manner for movement relative to the frameand is moved by an end of a lever 10 pivoted to the frame 8, and can bemoved with precision. The

other end of the lever is pressed or controlled by a special nut 12which is held on a bolt 11 so that it does not rotate but can be movedalong the screw thread of the bolt. The lever 10 is rotatable around thepivot point 10a of the lever. The special nut 12 is provided with ametal member or cam-like 13 on the back side of the special nut. A limitswitch 14 is placed at a position below the metal member 13. The limitswitch 14 is connected with an electrical conductor wire 17. The bolt 11is rotated by a motor 18 and the special nut 12 is moved, as from theright-hand side to the left-hand side, thereby causing the lever 10 torotate. The DC. electric current is fed to a solenoid coil 16 and ashutter 19 is open during the closing of the limit switch 14 by themetal cam-like member 13 fixed to the special nut 12. When the lever 10is rotated by the afore-described action on its pivot 10a, thelenticular screen 9 is moved by the end of the lever. By adjusting theposition of the pivot point relative to one end of the lever 10, theminute distance of one pitch of the lenticular screen as it is moved canbe magnified by and controlled the action of the other end of the leverattached via nut 12 to the bolt 11. By adjusting the length of the metalcamlike member 13 and using the limit switch 14, the shutter 19 is openfor the period of time during which the lenticular screen 9 is moved onepitch. Also, it is possible to control the pitch moving distance of thelenticular screen 9 with a high degree of accuracy due to the leverarrangement and mechanical advantage derived therefrom.

In this connection, the relationship between the opening and the closingof the shutter and the additional distance required for moving thecamera is fully explained hereinafter by referring again to FIGS. 2 and3.

When the camera 1 reaches the point A, the metal member 13 which isfixed to the special nut 12 must reach the position to contact the limitswitch 14 for opening and closing the shutter. Also, the metal member 13must travel to the position to release from the limit switch 14 andsimultaneously the camera must reach the point B during a period of timeof opening and closing the shutter. Incidentally the time required foropening and closing the shutter (or the shutter speed) is variedindependently of the travel distance of the carriage (or the travelingspeed of the carriage) on which the camera is placed, and therefore thestarting position D of the camera which is set by taking intoconsideration the additional distance required for moving the carriageis not constant in every case even if the travel distance of thecarriage is set. Therefore, in the conventional photographingtechniques, the work must be conducted by starting the camera only afterthe car riage is moved to the point D" which is set by calculating theadditional distance required for moving the carriage in considering theshutter speed and the traveling speed of the carriage.

In accordance with a further embodiment of this invention, a camera forphotographing stereographically can be operated by opening the shutterat the predetermined position of the camera after the carriage has beenautomatically moved by the action of an electric system for theadditional distance in a certain proportion relative to the travelingdistance of the carriage, and also by closing the shutter after thelenticular screen has moved one pitch and the camera has moved apredetermined distance during the predetermined time required foropening and closing the shutter.

The camera according to the further embodimentof this invention can beoperated without calculation of the additional distance required formoving the carriage and therefore the efficiency of photographing suchan interest is remarkably increased by using said camera when thephotographing is conducted outdoors in open air where there is littlechance and a short time for opening and closing the shutter.

The camera is illustrated hereinafter by referring to the accompanyingdrawings 4, 5, 6 and 7 in which the numerals 8, 9 and 16 indicate thesame members as those indicated by the numerals 8, 9 and 16 in FIG. 3.The numeral 22 is a lever which is designed by modifying the end oflever 10 as shown in FIG. 3. An eccentric cam 20 is driven by a motor 21as shown in FIG. 6 and the lever is moved. The eccentric cam 20 isrotated always in the direction as indicated by an arrow in FIG. 4 andthe mechanical backlash is negligible. A disc 23 having the projectionA, B, C and D is fixed coaxially with the eccentric cam 20 and rotatedin the same direction as that of the eccentric cam 20, as indicated byan arrow in FIG. 5. The lever 22 is pushed by the eccentric cam 20within the range of the semicircle DAB of the disc 23, that is withinthe angle. A limit switch 24 is closed when it contacts the projectionsA, B, C and D of the disc 23, and also the limit switch is open when itreleases the projections A, B, C and D. The signals dispatched by theonand offaction are selectively transferred to a motor 25 for drivingthe carriage on which the camera is placed and a solenoid coil 16 foropening and closing a shutter 19 by the logical circuit. The angulardistribution formed between projections is shown in FIG. 5. When thelimit switch 24 contacts the projection C, the camera reaches the pointC on the rail 5 as shown in FIG. 2 and the camera faces the subject 2and then the focus of the camera is adjusted. When the disc 23 isrotated, the projection C releases the limit switch 24 to dispatch a cutsignal and the cut signal starts the motor 25 for moving the carriage onthe rail 5 in the direction from the point C" to the point D as shown inFIG. 2 (C D). When the limit switch is passed the point E which has noprojection, and the carriage arrives at the point A on the rail 5, thecarriage is moved to the point D on the rail 5 as shown in FIG. 2. Thedisc 23 is rotated until an input signal is generated by the action ofthe projection Dcontacting the limit switch. Thus, it is noted that theangle COE formed in the disc 23 corresponds to the travel distance ofthe carriage which is measured by the distance from the point C to thepoint A on the rail and the travel distance is a half of the totaltravel distance of the carriage, and also that the angle EOD formed inthe disc 23 corresponds to the additional distance required for movingthe carriage from the point A to the point The motor 25 is rotatedreversely by receiving the cut signal dispatched from the projection Dof the disc 23. The shutter is open by receiving the input signaldispatched from the projection A, the angle DOA becomes equal to theangle EOD, the carriage 4 is transferred for the additional distancemeasured from the point D to the point A" and the lenticular screen istransferred or shifted for the additional distance corresponding to theangle DOA which is the rotated momentum of the eccentric cam 20. Whenthe disc 23 and the carriage 4 are moved continuously until theprojection B reaches the place of the limit switch 24, the carriage 4reaches the point B on the rail 5 as shown in FIG. 2 and the shutter isclosed. The lenticular screen is moved within the range of the arc AB'during a period of time of opening and closing the shutter and themoving momentum of the lenticular screen can be adjusted by changing thepivoted center of the lever 22 or changing the rotated momentum of theeccentric cam 20. When the shutter is closed, the carriage istransferred from the point B to the point C, and the disc 23 and thecarriage 4 are stopped by receiving the input signal generated from theprojection C of the disc 23 as shown in FIG. 7. In this case, if theangle BOC is set to be half of the angle AOB OC /2 AOB), the carriage 4can be stopped at the point C on the rail as shown in FIG. 2, and it ispossible to get ready for a further photographing procedure.

Although this invention is illustrated by referring to the accompanyingdrawings, it should be noted that this invention includes somemodifications without departing from the spirit of this invention asillustrated hereinafter.

Namely, the lenticular screen referred to is understood by those skilledin the art, to include screen devices having a plurality of lenticules(or lens-like elements), or a plurality of apertures to restrict thefall of the exposure light onto the sensitive film surface in narrowvertical restricted areas.

Further, the disc 23 is modifiable by changing the projections toconcave recesses or the peripheral surface of the disc 23 is providedwith an insulator and a conductor alternately spaced thereon. Inaddition, the limit switch 24 can be replaced with a photo-switch, areading switch and a magnet diode which can be operated by cutting thelight or approaching of the magnetic field. Still further, the limitswitch 24 can be replaced with a rotary drum and a phototransistor andalso a plurality of limit switches 24 are interlocked with the disc 23having one single projection.

What we claim is that:

1. In a camera mechanism with lens means for photographing picturesstereographically in relief, including a movable lenticular screen,electrically operated shutter means for exposing through the lens meansa photographic sensitive surface whereby the lenticular screen serves torestrict the fall of exposure light to a plurality of separatelyrestricted areas only of said sensitive surface, the improvementcomprising:

a. a first-mechanism constituting an improved lever and activatingmechanism for more accurately moving said lenticular screen apredetermined distance, and

b. a second mechanism for opening and closing the shutter meansoperatively interconnected to said lenticular screen activatingmechanism;

c. said first mechanism including:

1. a frame to hold said lenticular screen so that said screen is capableof laterally shifting movements relative to the frame and lens means;

2. an angular lever adjustably and pivotally mounted near an upper endon said frame with the latter end which is adjacent the pivotal mountingbeing selectably engageable with said screen to move same; said leverhaving an opposite lower depending end to which a sleeve nut ismechanically connected to help actuate said lever;

3. a rotatable screw-threaded adjusting bolt mounted generallytransverse to the depending lever, said sleeve nut mounted upon saidbolt in a non-rotative but axially shiftable manner, whereby the sleevenut is adjustably moved axially thereon responsive to relative rotationof said adjusting bolt to effect very accurate adjustment and correlatedshifting movement of said screen relative to the frame;

(I. said second mechanism for operatively interconnecting said shutteropening and closing mechanism with said lenticular screen activatingmechanism, including:

1. a switch-closing member attached to said sleeve nut on the adjustingbolt;

2. an electrical circuit for operating said shutter means; said circuitincluding a limit switch and electrical solenoid means connected intothe circuit with said limit switch mounted adjacent to said forengagement by said switch-closing member on said sleeve nut; and

e. said first and second mechanisms being interconnected, whereby saidshutter means is timely activated responsive to closing of said limitswitch by said switch closing member at a precisely predetermined timewhen the predetermined shiftable movement of said lenticular screen hasbeen effected to enable photographing the subject from the particularangle of the camera relative to the subject.

2. In a camera mechanism with lens means for photographing picturesstereographically in relief, including a movable lenticular screentogether with electrically operated shutter means for exposing throughthe lens means a photographic sensitive surface whereby the lenticularscreen serves to restrict the fall of exposure light to a plurality ofseparately restricted areas only of said sensitive surface, theimprovement comprising:

a. a first mechanism constituting a lever and activating mechanism foraccurately moving the lenticular screen a predetermined distance, saidfirst mechanism further including:

1. a frame to adjustably hold a lenticular screen so that the lenticularscreen is laterally shiftable relative to the frame and lens;

2. an angular lever adjustably and pivotally mounted near an upper endon said frame with the latter end which is adjacent the pivotal mountingbeing selectably engageable with said screen to move same; said leverhaving an opposite lower depending end to be actuated to impart agenerally oppositely directed movement to said upper end of said lever;

b. a second mechanism comprising cam means for interconnecting saidlenticular screen activating mechanism with a third mechanism; said cammeans including an eccentric cam and motive power drive means forrotating said cam, said cam mounted to rotatably engage said dependinglower end of said lever to effect predetermined movement of saidlenticular screen; and

. said third mechanism being effective for controlling the travelmovement of the camera relative to the subject, and being operativelyinterconnected with said first and second mechanisms; said thirdmechanism comprising carriage means for movably mounting the camera forlateral travel relative to a subject being photographed, and includingmotive drive means for moving said carriage at predetermined incrementsof travel; and

d. electrical programming means electrically interconnecting said firstand second mechanism and said carriage means of the third mechanism tocorrelate a predetermined amount of camera travel with a predeterminedmovement of the lenticular screen and the corresponding timely actuationof the shutter means.

3. The camera apparatus as defined in claim 2 wherein the thirdmechanism further includes a circular disc mounted coaxially with saidcam and having electrical contact-making and breaking areas atpredetermined places on its outer periphery, and limit switch meanscngageable by said areas for helping to effect the camera travel,lenticular screen movement, and shutter operation.

4. The apparatus as defined in claim 3 wherein said contact-makingand-breaking areas are projections on said disc periphery.

5. The apparatus as defined in claim 3 wherein said contactmakingand-breaking areas are recessed notchlike areas in said disc periphery.

6. The apparatus as defined in claim 3 wherein said contact-makingand-breaking areas are a series of electrical conductors interspersedwith alternate insulating means therebetween at the predetermined areas.

7. Camera apparatus as defined in claim 3 wherein said limit switch is aphoto-switch.

8. Camera apparatus as defined in claim 3 wherein said limit switch is areading switch.

9. Camera apparatus as defined in claim 3 wherein said limit switch is amagnet diode.

10. Camera apparatus as defined in claim 3 wherein said limit switch isa rotary drum.

1]. Camera apparatus as defined in claim 3 wherein said limit switch isa phototransistor.

UNITED STATES PATENT OFFICE. CERTEFECAT 0F CQRECTEON Patent No. 3 685413 Dated August 22 1972 Inventor(s) KENJI MATSUNAGA ET AL It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

On the Title Sheet between items 21 and 52 insert:

- [30] Foreign Application Priority Data December 28,

1968, Japan 861/69 Signed and sealed this 15th day of May 1973.

(SEAL) Attest:

ROBERT GOTTSCHALK EDWARD M.FLETCHER,JR. Attesting Officer Commissionerof Patents USCOMM-DC 60376-P69 w us. GOVERNMENT PRINTING OFFICE I9690-366-334 FORM PO-1050 (10-69) UNITED STATES PATENT OFFICE. CERTIFICATEOF CORRECTION Patent No. 3 5, Dated August 22, 1972 Inventor(s) KENJIMATSUNAGA ET AL It is certified that error appears in theabove-identified patent and that said Letters Patent are herebycorrected as shown below:

On the Title Sheet between items 21 and 52 insert:

-- [30] Foreign Application Priority Data December 28,

1968, Japan 861/69 Signed and sealed this 15th day of May 1973.

(SEAL) Attest:

ROBERT GOTTSCHALK' EDWARD M.FLETCHER,JR. Attesting Officer Commissionerof Patents USCOMM'DC 6O376-P69 U.54 GOVERNMENT PRINTING OFFICE I969O365-334 F ORM FO-I 050 (10-69)

1. In a camera mechanism with lens means for photographing picturesstereographically in relief, including a movable lenticular screen,electrically operated shutter means for exposing through the lens meansa photographic sensitive surface whereby the lenticular screen serves torestrict the fall of exposure light to a plurality of separatelyrestricted areas only of said sensitive surface, the improvementcomprising: a. a first-mechanism constituting an improved lever andactivating mechanism for more accurately moving said lenticular screen apredetermined distance, and b. a second mechanism for opening andclosing the shutter means operatively interconnected to said lenticularscreen activating mechanism; c. said first mechanism including:
 1. aframe to hold said lenticular screen so that said screen is capable oflaterally shifting movements relative to the frame and lens means;
 2. anangular lever adjustably and pivotally mounted near an upper end on saidframe with the latter end which is adjacent the pivotal mounting beingselectably engageable with said screen to move same; said lever havingan opposite lower depending end to which a sleeve nut is mechanicallyconnected to help actuate said lever;
 3. a rotatable screw-threadedadjusting bolt mounted generally transverse to the depending lever, saidsleeve nut mounted upon said bolt in a non-rotative but axiallyshiftable manner, whereby the sleeve nut is adjustably moved axiallythereon responsive to relative rotation of said adjusting bolt to effectvery accurate adjustment and correlated shifting movement of said screenrelative to the frame; d. said second mechanism for operativelyinterconnecting said shutter opening and closing mechanism with saidlenticular screen activating mechanism, including:
 1. a switch-closingmember attached to said sleeve nut on the adjusting bolt;
 2. anelectrical circuit for operating said shutter means; said circuitincluding a limit switch and electrical solenoid means connected intothe circuit with said limit switch mounted adjacent to said forengagement by said switch-closing member on said sleeve nut; and e. saidfirst and seCond mechanisms being interconnected, whereby said shuttermeans is timely activated responsive to closing of said limit switch bysaid switch closing member at a precisely predetermined time when thepredetermined shiftable movement of said lenticular screen has beeneffected to enable photographing the subject from the particular angleof the camera relative to the subject.
 2. an angular lever adjustablyand pivotally mounted near an upper end on said frame with the latterend which is adjacent the pivotal mounting being selectably engageablewith said screen to move same; said lever having an opposite lowerdepending end to which a sleeve nut is mechanically connected to helpactuate said lever;
 2. an electrical circuit for operating said shuttermeans; said circuit including a limit switch and electrical solenoidmeans connected into the circuit with said limit switch mounted adjacentto said for engagement by said switch-closing member on said sleeve nut;and e. said first and seCond mechanisms being interconnected, wherebysaid shutter means is timely activated responsive to closing of saidlimit switch by said switch closing member at a precisely predeterminedtime when the predetermined shiftable movement of said lenticular screenhas been effected to enable photographing the subject from theparticular angle of the camera relative to the subject.
 2. In a cameramechanism with lens means for photographing pictures stereographicallyin relief, including a movable lenticular screen together withelectrically operated shutter means for exposing through the lens meansa photographic sensitive surface whereby the lenticular screen serves torestrict the fall of exposure light to a plurality of separatelyrestricted areas only of said sensitive surface, the improvementcomprising: a. a first mechanism constituting a lever and activatingmechanism for accurately moving the lenticular screen a predetermineddistance, said first mechanism further including:
 2. an angular leveradjustably and pivotally mounted near an upper end on said frame withthe latter end which is adjacent the pivotal mounting being selectablyengageable with said screen to move same; said lever having an oppositelower depending end to be actuated to impart a generally oppositelydirected movement to said upper end of said lever; b. a second mechanismcomprising cam means for interconnecting said lenticular screenactivating mechanism with a third mechanism; said cam means including aneccentric cam and motive power drive means for rotating said cam, saidcam mounted to rotatably engage said depending lower end of said leverto effect predetermined movement of said lenticular screen; and c. saidthird mechanism being effective for controlling the travel movement ofthe camera relative to the subject, and being operatively interconnectedwith said first and second mechanisms; said third mechanism comprisingcarriage means for movably mounting the camera for lateral travelrelative to a subject being photographed, and including motive drivemeans for moving said carriage at predetermined increments of travel;and d. electrical programming means electrically interconnecting saidfirst and second mechanism and said carriage means of the thirdmechanism to correlate a predetermined amount of camera travel with apredetermined movement of the lenticular screen and the correspondingtimely actuation of the shutter means.
 3. The camera apparatus asdefined in claim 2 wherein the third mechanism further includes acircular disc mounted coaxially with said cam and having electricalcontact-making and breaking areas at predetermined places on its outerperiphery, and limit switch means engageable by said areas for helpingto effect the camera travel, lenticular screen movement, and shutteroperation.
 3. a rotatable screw-threaded adjusting bolt mountedgenerally transverse to the depending lever, said sleeve nut mountedupon said bolt in a non-rotative but axially shiftable manner, wherebythe sleeve nut is adjustably moved axially thereon responsive torelative rotation of said adjusting bolt to effect very accurateadjustment and correlated shifting movement of said screen relative tothe frame; d. said second mechanism for operatively interconnecting saidshutter opening and closing mechanism with said lenticular screenactivating mechanism, including:
 4. The apparatus as defined in claim 3wherein said contact-making and-breaking areas are projections on saiddisc periphery.
 5. The apparatus as defined in claim 3 wherein saidcontact-making and-breaking areas are recessed notch-like areas in saiddisc periphery.
 6. The apparatus as defined in claim 3 wherein saidcontact-making and-breaking areas are a series of electrical conductorsinterspersed with alternate insulating means therebetween at thepredetermined areas.
 7. Camera apparatus as defined in claim 3 whereinsaid limit switch is a photo-switch.
 8. Camera apparatus as defined inclaim 3 wherein said limit switch is a reading switch.
 9. Cameraapparatus as defined in claim 3 wherein said limit switch is a magnetdiode.
 10. Camera apparatus as defined in claim 3 wherein said limitswitch is a rotary drum.
 11. Camera apparatus as defined in claim 3wherein said limit switch is a phototransistor.